Indicator for scales



May 6, 1930. A w ERG ET AL 1,757,766

INDICATOR FOR scALEs Filed Jan. 7, 1929 INVENTORS a 50 the indicator assembly; and

Patented May 3 6, 1930 UNITED STATES ATE QF cE" ANDREW w. rnneusoiv AND ROBEBT'J. BURKE, or iinritosn, PENNSYLVANIA, AS- SIGNORS o LINCOLN SCALE CORPORATION, or LATROBE ENNSYLVANIA, A con- IPORATION OF DELAWARE INDICATOR Application filed January This invention relates generally to scales, and more particularly to an indicator which can be adjusted to coincide with the zero point, or other desired point, on a scale.

Drum scales commonly are provided with a front indicatorused .by the merchant and a rear indicator viewed by the customer. In assembling such scales, it is usually necessary to adjust the rear indicator so that itcoincides with its zero point on the scale at the same time as the front indicator coincides with its zero point. One method heretofore employed for accomplishing this adjustment was to provide a. supporting plate which could be secured to the scale drum casing. The plate had an opening which was covered with glass or other transparent material, and the glass was provided with a hair line. In order to make the indicator on the plate co- V '20 incide with the zero point on the scale drum,

the plate was secured to the drum casing in such manner that the whole plate could be removed. This arrangement required loosening the screws or other means used for con necting the plate to the drumcasing. The glass was then moved in its supporting plate and the screws were again tightened; This arrangement frequently; required that the supporting plate be removed and the position of the glass adjusted several times before the desired setting was obtained.

In accordance with our invention, we provide an indicator assembly comprising a frame which is permanently secured to the scale drum casing, and which'has an indicator associated therewith adjustable with relation to the frame, and an opening in the a frame. The desired adjustment may be made from the outside of the scale without removing the frame; 3 p

In the accompanying drawings which illustrate the present preferred embodiment of 5 our invention, V r 45 v Figure 1 is an end elevationof a scale drum 7 casing; V i l V Figure 2 is a partial front elevation thereof; '1 r 7 V Figure 3 is a View, to an enlarged-scale,

non scALns 7', 1929., Serial No. 330,727.; j

Figure 4 is a section on the line'IV.IV of .Fig.3." i

Referring to the accompanying drawings, the scale drum casing 2 has a front indicator 3 whichis usedby the merchant, and a rear indicator 4 used by the purchaser; Thescale drum 571s providedwith the usual divisions. The rear indicatorasse'mbly-ei comprises a frame or plat'e'5' having an opening 6 there- -in through which the scale-drum may be .viewed. The opening is covered by a piece of .glass 7 which is maintained in position "by clips 7. The clips are provided with elongated holes 8 for the receptionofscrews '9, in order that the clipsmay be adjustedto takecare of different sized pieces of glassg 1 The frame 5 is provided with bosses 10 having screw holes :11 therein forg fastening the frame to the scale drumcasing'. -A hole '12: is provided to receive a dowel pin on the .drum casing. U 7

-An indicator adjusting screw 13 is mounted inthe plate 5- in arecess in a lug 15 on the frame 5, and the opposite end 16 of the screw -is'guided in a lug 17 on theframe. A biasing spring 18 surrounds the screw adjacent its-head and lies between the log 15 and a Washer 19, V which washer is held in placebya cotter pin 20. The head of-the screw issetin arecess The head 14ofthe screw fits so that a'tool must be used to turn it and is slotted for a screwdriver;

r The indicator screw passes through a threaded opening 22 provided in an indicator block 23. 1 The indicatorblock carriesan indicator 2 1' secured thereto at 25. v.As shown in Fig; 4, the indicator block 23 is so shaped 7 that it is prevented from rotating when the screw 13 is turned. 7 Upon turning of the screw the block moves along the screw, carrying the indicator withit to the desired position. The adjustment is accomplished simply by rotatin gthe screw by means of a screw driver, without thenecessity of looseningany screws or other fastening means, and

without changing theposition of the frame 5 V with; respect to the scale drum casing. i We have illustrated" and described the pres ent preferred embodiment of our'invention;

- s lt isto be understood, however, that the Vin- 10o vention maybe otherwise embodied without departing from the spirit of the invention or the scope of the appended claims.

We claim: 7 V

1. A drum scale having markings thereon, front and real: indicators, each indicator having an independent adjustment operable from V the outside of the scale to cause the indicator to coincide with the markings onfthe drum.

2 A scale having a rotatable drum provid ed with markings-thereon, an indicator, and

- means operable from the outside oflthe scale cater and-a rear indicator, covers for the 1n- V dlcators, and meansfor moving the rear 1nfor A moving the indicator relative 'to the Vmarkings on the drum-without rotating the; m, to cause the indicator to coincide with the markings.

3. A scale having a rotatable drum-pro- V vided 'with markings thereon; a, iiro nt" indicator-a-nd anrearlindicator and means operable from outside the scale ior moving the rear indicator independently ofthe front indicator-tol cause the rear-indicator to coincide with the markings on the drum.

4; A scale having a; rotatable drum pros Vided with markings thereon, afront indid icatorindependentlyof the front indicator but relative to the drum to cause it to coincide with the markings onthe drum, said means being operable without removing the rear cover, V i r 5. A drum scale having markings thereon, front and rear indicators; each indicator having' an independent adjustment operable from the outside of the scale to causethe indicatorto coincide with the markings on the i dru the adjustment for one of the indicators con 1prising a screw mounted" in the frame of the scale-and havlng an lndlcator movable along the screw when the screw is rotated, and means for rotating the screw fromthe outside of the scale.

In testimony whereof we have hereunto setourhands; V A a h ANDREW'W. FERGUSON.

ROBERT J. 3 

